From fba4b697710eb2a4bee456b9d39e9239c66f8bee Mon Sep 17 00:00:00 2001 From: Nikolay Borisov Date: Thu, 23 Jun 2016 21:17:08 +0300 Subject: btrfs: Fix slab accounting flags BTRFS is using a variety of slab caches to satisfy internal needs. Those slab caches are always allocated with the SLAB_RECLAIM_ACCOUNT, meaning allocations from the caches are going to be accounted as SReclaimable. At the same time btrfs is not registering any shrinkers whatsoever, thus preventing memory from the slabs to be shrunk. This means those caches are not in fact reclaimable. To fix this remove the SLAB_RECLAIM_ACCOUNT on all caches apart from the inode cache, since this one is being freed by the generic VFS super_block shrinker. Also set the transaction related caches as SLAB_TEMPORARY, to better document the lifetime of the objects (it just translates to SLAB_RECLAIM_ACCOUNT). Signed-off-by: Nikolay Borisov Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/extent_map.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/extent_map.c') diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index e0715fc..26f9ac7 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -13,7 +13,7 @@ int __init extent_map_init(void) { extent_map_cache = kmem_cache_create("btrfs_extent_map", sizeof(struct extent_map), 0, - SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL); + SLAB_MEM_SPREAD, NULL); if (!extent_map_cache) return -ENOMEM; return 0; -- cgit v1.1